S-90042A129 M8 x 25 mm ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in harsh environments
• High-pressure sealing capability up to 1500 psi with integrated silicone rubber O-ring for leak-proof performance
• Exceptional mechanical strength with 100,000 psi tensile strength and Rockwell B85 hardness for demanding applications
• Wide temperature tolerance from -80° to 400°F, maintaining sealing integrity across extreme thermal conditions
• Precision Class 6g thread fit for smooth installation and secure fastening in metric assemblies
• Standard hex drive compatibility with 6mm drive size for efficient installation using common tools
• Full thread engagement along the 25mm length for maximum holding power and distribution of clamping force

Professional Applications & Engineering Value

This M8 socket head cap screw delivers critical engineering solutions where pressure sealing and corrosion resistance are paramount. The 18-8 stainless steel construction combined with the silicone rubber O-ring creates a reliable barrier against fluid and gas leakage in high-pressure systems up to 1500 psi. The coarse thread pitch (1.25mm) and Class 6g thread fit ensure rapid installation and vibration resistance in industrial machinery, hydraulic systems, and pneumatic equipment. Engineered to withstand extreme temperature fluctuations from -80° to 400°F, this metric socket head screw maintains sealing integrity in challenging environments including automotive assemblies, processing equipment, and outdoor industrial applications where environmental factors would compromise ordinary fasteners.

Specification Summary & Compliance

This fully threaded M8 x 1.25mm x 25mm socket head cap screw features Class 6g thread tolerance for precision fit in metric applications. Manufactured to ASME B18.3, DIN 912, and ISO 4762 standards, ensuring dimensional accuracy and interchangeability. The fastener is RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting international environmental and safety regulations for industrial use.